---
title: Fuel needs oxygen to burn, and there is no air in space, so a rocket… — Rockets, satellites and astronauts · tree and pragmatics
description: Fuel needs oxygen to burn, and there is no air in space, so a rocket carries its own oxygen as well as its fuel. Who acts: Fuel, air, rocket. A sentence of the lesson «Rockets, satellites and astronauts» of the world course of Mova's primary school with its dependency tree and the pragmatics of ever
---

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# Rockets, satellites and astronauts, sentence 2

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Fuel needs oxygen to burn, and there is no air in space, so a rocket carries its own oxygen as well as its fuel.

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**Who acts:** Fuel, air, rocket · **What happens:** need, burn, be, carry · **To what, where:** oxygen, space, own oxygen

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This is a sentence of the lesson «Rockets, satellites and astronauts» of the world course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Fuel, air, rocket), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:071-rockets-satellites-astronauts.lesson:2
# text = Fuel needs oxygen to burn, and there is no air in space, so a rocket carries its own oxygen as well as its fuel.
# source = school lesson (ours)
# course = world
# lesson = 071-rockets-satellites-astronauts.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×1
1	Fuel	fuel	NOUN	NN	Number=Sing	2	nsubj	_	_
2	needs	need	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	oxygen	oxygen	NOUN	NN	Number=Sing	2	obj	_	_
4	to	to	PART	TO	_	5	mark	_	_
5	burn	burn	VERB	VB	VerbForm=Inf	3	acl	_	_
6	,	,	PUNCT	,	_	9	punct	_	_
7	and	and	CCONJ	CC	_	9	cc	_	_
8	there	there	PRON	EX	PronType=Dem	9	expl	_	_
9	is	be	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
10	no	no	DET	DT	PronType=Neg	11	det	_	_
11	air	air	NOUN	NN	Number=Sing	9	nsubj	_	_
12	in	in	ADP	IN	_	13	case	_	_
13	space	space	NOUN	NN	Number=Sing	9	obl	_	_
14	,	,	PUNCT	,	_	18	punct	_	_
15	so	so	ADV	RB	_	18	advmod	_	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	_	_
17	rocket	rocket	NOUN	NN	Number=Sing	18	nsubj	_	_
18	carries	carry	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	parataxis	_	Agree=R7-rel-agree|Haiku=2:conj
19	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	21	nmod:poss	_	_
20	own	own	ADJ	JJ	Degree=Pos	21	amod	_	_
21	oxygen	oxygen	NOUN	NN	Number=Sing	18	obj	_	_
22	as	as	ADV	RB	ExtPos=CCONJ	26	cc	_	_
23	well	well	ADV	RB	Degree=Pos	22	fixed	_	_
24	as	as	ADP	IN	_	22	fixed	_	_
25	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	26	nmod:poss	_	_
26	fuel	fuel	NOUN	NN	Number=Sing	21	conj	_	Agree=R5-strong|Haiku=18:conj
27	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **need** | present | Fuel | oxygen |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot oxygen=Theme |
| 2 | **burn** | to-infinitive | Fuel *not said here* | oxygen *not said here* |  |  |  |  | vn light\_emission-43.1 «NP V»: agent=Theme |
| 3 | **be** | present | no air |  |  | space; there |  |  | vn exist-47.1 «NP V PP.location»: agent=Theme in space=Location |
| 4 | **carry** | present | a rocket | air's own oxygen as air's fuel |  |  |  |  | vn carry-11.4 «NP V NP»: agent=Agent oxygen=Theme |

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One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:world:071-rockets-satellites-astronauts.lesson:2`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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